code: def test_4_get_columns(self):
      columns = self.handler.get_columns("TryDaxTable")
      assert columns.type is not RESPONSE_TYPE.ERROR
  
file_path: mindsdb/mindsdb/integrations/handlers/dynamodb_handler/tests/test_dynamodb_handler.py
imports: import unittest
  from mindsdb.integrations.handlers.dynamodb_handler.dynamodb_handler import DyanmoDBHandler
  from mindsdb.api.executor.data_types.response_type import RESPONSE_TYPE
label_desc: Use image node_id 5 for calling the DynamoDBHandlerTest obj's underlying member method code with example usage: obj.test_4_get_columns() without return types